/Engine/Source/Editor/SceneOutliner/Public/SortHelper.h
Sort secondarily by the specified function and mode. Beware the function is a reference, so must be valid for the lifetime of this instance.
[FSceneOutlinerSortHelper](API\Editor\SceneOutliner\FSceneOutlinerSortHelper) & Secondary ( [FSecondaryFunction](API\Editor\SceneOutliner\FSceneOutlinerSortHelper\FSecondaryFunction) && Function, [EColumnSortMode::Type](API\Runtime\Slate\Widgets\Views\EColumnSortMode__Type) SortMode )